I've been googling and searching and youtubing all evening without much luck. I have an iPhone 3g with 3.1 firmware and the 5.11.07 baseband. Under Settings > General > Network , I don't have the Cellular Data Network tab and can therefore not change APN settings.

I've tried editing the plist file with the line to allow EDGE editing, but it didn't work. I've also seen posted in multiple places that the old APN Editor from Cydia no longer works (it crashed while downloading). So, is there a way for me to make this tab appear? I have a jailbroken phone on AT&T. Thanks all!

I've tried everything and searched everywhere and cannot get the settings to reappear. For me it started when I enabled teathering a while ago. But since then I've done two upgrades (3.1 & 3.1.2) and still no sign of the cellular data settings. I've removed the profile and tried to install a new one. Tried updating all the carrier settings, 5.0, 5.6, don't know where to find 6.0. My visual voice mail has been gone since my cellular data network settings disappeared and the way to get it back seems to be through those settings ugh help!!!!

I am in Panama, with a MoviStar cell.
If I put my AT&T chip in the phone, I get Cellular Data Network and can change the APN to whatever.
However, when I put my Movistar chip in, no Cellular Data Network and my Carrier is MoviStar 5.0, not the Stealth 6.0 for AT&T.

I've gone back and forth a couple of times and it's the same. AT&T chip, got it working find, shows AT&T 6.0.
Movistar chip - no dice.
So, how can I get an IPCC for Movistar that gives me Cellular Data Network?

many thanks!

Last edited by socoast; 2009-11-28 at 05:24 PM.
Reason: more troubleshooting, more accurate info

Tried to find it in your signature but no luck. I have the same issue... no cellular network settings to enter an apn in. I am on 3.1.2 3g jailbroken and unlocked. This happened when I went to 3.1.2 from 3.1

Maybe you could do a complete restore to virgin (after doing a Backup, of course), then use Pwnage 3.1.4 to create the IPCC and BlackRain to jailbrake and Cydia to unlock. Then restore from Backup
That worked for me on two iPhones that got upgraded to 3.1.2 via iTunes.
Both now see Cellular Data Network (except of course when I have the MoviStar chip in - they are the official iPhone carrier in Panama, but they don't have an APN released yet. It's been 6 months!)

Since you are using T-Mobile, did you turn off 3G? That's supposed to be an issue.